An iron needle sinks in water as its density is ………….. than `1gmc^(-3)`

Why an iron needle sinks in water, but an iron ship floats in water?

An iron nail sinks in water while an iron ship floats on water.Explain the reason.

Calculate the molarity of water if its density is 1000 kg m^(-3)

A piece of iron (density 7.6 g cm^(-3) ) sinks in mercury (density 13.6 g cm^(-3) ).

The mass of 1 litre of water is 1 kg. Find the density of water in kg m^(-3)

The mass of 1 litre of water is 1 kg. Find the density of water in gcm^(-3)

A piece of iron weighs 44.6 gf in air. If the density of iron is 8.9xx10^(3)kgm^(-3) , find the weight of iron piece when immersed in water.

A cubical box is to be constructed with iron sheets 1 mm in thickness. What can be the minimum value of the external edge so that the cube does not sink in water? Density of iron =8000kg m^-3 and density of water =1000 kgm^-3 .

A glass beaker is placed partially filled with water in a sink it has a mass of 390 gm and an interior volume of 500 cm^(2) when water starts filling the sink, it is found that if beaker is less than half full it will float but if it is more than half full it remains on the bottom of the sink as the water rises to its rim, what is the density of the material of which the beaker is made?

A horse shoe magnet has two iron needles attached at its ends. Show on a diagram the positions occupied by the needles and name the phenomenon which comes into play.